ST JOHN’S, Antigua – Chairman of the Council of LIAT Trade Unions Chester Humphrey has said the board will have a difficult time replacing CEO Ian Brunton and warned LIAT could collapse if re-fleeting is derailed. “There are some crucial issues of survivability which I am assuming at this point is what is taking up everybody’s attention,” said Humphrey. “If the re-fleeting is interrupted and significantly derailed this airline wouldn’t survive,” he added.